Android AppCompact v7-23 Thema gebrochen

Question

Ich beginne neues Android-Projekt von Android Studio. Unten ist der Login-Bildschirm, den ich sehe. Ich weiß nicht, was ich hier verpasse.

Ich habe keine Ahnung, warum die accentColor so etwas wie dies gezeigt wird?

build.gradle (Modulebene)

apply plugin: 'com.android.application' 

android { 
    compileSdkVersion rootProject.ext.compileSdkVersion 
    buildToolsVersion rootProject.ext.buildToolsVersion 

    defaultConfig { 
     applicationId "com.example.myapplication" 
     minSdkVersion rootProject.ext.minSdkVersion 
     targetSdkVersion rootProject.ext.targetSdkVersion 
     versionCode 1 
     versionName "1.0" 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    testCompile 'junit:junit:' + rootProject.ext.junitVersion 
    compile 'com.loopj.android:android-async-http:' + rootProject.ext.loopjHttpAsyncTask 
    compile 'com.roughike:bottom-bar:' + rootProject.ext.bottomBar 
    compile 'com.android.support:appcompat-v7:' + rootProject.ext.supportLibraryVersion 
    compile 'com.android.support:design:' + rootProject.ext.supportLibraryVersion 
} 

build.gradle (Projektebene)

// Top-level build file where you can add configuration options common to all sub-projects/modules. 

buildscript { 
    repositories { 
     jcenter() 
    } 
    dependencies { 
     classpath 'com.android.tools.build:gradle:2.2.0-alpha3' 

     // NOTE: Do not place your application dependencies here; they belong 
     // in the individual module build.gradle files 
    } 
} 

allprojects { 
    repositories { 
     jcenter() 
    } 
} 

task clean(type: Delete) { 
    delete rootProject.buildDir 
} 

ext { 
    //app related 
    compileSdkVersion = 23 
    buildToolsVersion = "23.0.3" 
    minSdkVersion = 16 
    targetSdkVersion = 23 

    //android related library 
    constraintLayout = "1.0.0-alpha3" 
    junitVersion = "4.12" 
    supportLibraryVersion = "23.3.0" 

    //custom libraries 
    bottomBar = "1.3.9" 
    loopjHttpAsyncTask = "1.4.9" 
} 

Answer 1

Das Problem verursacht durch gradle Build-Tool-Version. Ändern Build-Tool Version stabile lösen würde es

ersetzen

classpath 'com.android.tools.build:gradle:2.2.0-alpha3' 

mit

classpath 'com.android.tools.build:gradle:2.1.0'